Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/27267
Title: Phytate Degradation in the Gizzard is Pivotal to Phytase Responses in Broiler Chickens
Contributor(s): Truong, H H (author); Yu, S (author); Moss, A F  (author)orcid ; Liu, S Y (author); Selle, P H (author)
Publication Date: 2016
Open Access: Yes
Handle Link: https://hdl.handle.net/1959.11/27267
Open Access Link: https://sydney.edu.au/vetscience/apss/documents/2016/APSS%202016%20Proceedings%20Final.pdfOpen Access Link
Abstract: Positive control (PC) and negative control (NC) maize-based diets were supplemented with either 0 and 1000 or 0, 500 and 2000 FTU/kg Buttiauxilla phytase, respectively, and offered to broilers from 7 to 28 days post-hatch. Degradation of IP6 phytate was determined in five gastrointestinal segments (gizzard, proximal jejunum, distal jejunum, proximal ileum, distal ileum) using acid insoluble ash as the dietary marker. A phytate degradation coefficient of 0.955 was recorded in the gizzard of birds offered the NC + 2000 FTU/kg diet. Curiously, 0.527 phytate degradation was observed in non-supplemented NC diets, which suggests a net phytate degradation of 0.428 to exogenous phytase. Across all five treatments, however, gizzard phytate degradation coefficients were significantly correlated with weight gain and toe ash, which was not the case in four small intestinal segments. Therefore, this study demonstrates that phytate degradation in the gizzard is pivotal to the magnitude of responses generated by phytase.
Publication Type: Conference Publication
Conference Details: APSS 2016: 27th Annual Australian Poultry Science Symposium, Sydney, Australia, 14th - 17th February, 2016
Source of Publication: Proceedings of the Australian Poultry Science Symposium, v.27, p. 174-177
Publisher: University of Sydney
Place of Publication: Sydney, Australia
ISSN: 1034-6260
1034-3466
Fields of Research (FoR) 2008: 070204 Animal Nutrition
070202 Animal Growth and Development
Fields of Research (FoR) 2020: 300303 Animal nutrition
300301 Animal growth and development
Socio-Economic Objective (SEO) 2008: 830309 Poultry
Socio-Economic Objective (SEO) 2020: 100411 Poultry
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
Publisher/associated links: https://sydney.edu.au/vetscience/apss/index.shtml
WorldCat record: http://www.worldcat.org/oclc/34146878
Appears in Collections:Conference Publication
School of Environmental and Rural Science

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